OpenShift v4.6.43 – EXEC PID Cleaner for CRI-O PID Leak Causing High Memory Utilization

# OpenShift v4.6.43 - CRI-O PID Leak Causing High Memory Utilization
# - RefURL
# [1]: https://access.redhat.com/solutions/6304881
# [2]: https://bugzilla.redhat.com/show_bug.cgi?id=1997062
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: execpid-cleaner
  namespace: kube-system
spec:
  selector:
    matchLabels:
      name: execpid-cleaner
  template:
    metadata:
      labels:
        name: execpid-cleaner
    spec:
      tolerations:
        - operator: Exists
      affinity:
        nodeAffinity:
           requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
            - matchExpressions:
              - key: node.openshift.io/os_id
                operator: In
                values:
                - "rhcos"
      terminationGracePeriodSeconds: 5
      containers:
      - name: execpid-cleaner
        image: [your-private-registry-ip-or-domain:port]/openshift4/release:4.6.43-tools
        command:
        - sh
        - -c
        - |
          set -euo pipefail
          while true; do
              printf "%s Running cleanup:\n" "$(date)"
              set -x
              find /run/crio/exec-pid-dir -type f -mmin +5 -exec rm -f {} \;
              sleep 5m
              set +x
          done
        securityContext:
          privileged: true
        resources:
          limits:
            memory: 64Mi
          requests:
            memory: 64Mi
        volumeMounts:
        - name: exec-pid-dir
          mountPath: /run/crio/exec-pid-dir
      volumes:
      - name: exec-pid-dir
        hostPath:
          path: /run/crio/exec-pid-dir